Merge "Unit tests: Fix unit test description strings."

tests/test_cdr.c

tests/test_cel.c

tests/test_channel_feature_hooks.c

tests/test_expr.c

tests/test_format_cap.c

tests/test_message.c

tests/test_poll.c

tests/test_sorcery_realtime.c

tests/test_stasis.c

tests/test_threadpool.c

tests/test_voicemail_api.c